The DX Rex

basically i have a 93 vx and im working full time for the summer and once thas done im goin back to school fulltime and workin part time so i dont have anytime to be doing motor swaps and im extremely lazy so........

1. i here the cam on the vtec-e head sucks and is for economy and wut not so if i were to change it with a z6 cam or like a zex cam would it make a difference?

2. also i have a skunk2 intake mani. and throttle body D series and wasnt sure if u should waste time and throw them on.

3. i kno the tranny sucks so i have a Z6 Si tranny ill be puttin on sometime soon.

4. i also have a 4-1 header d series that is not on yet and was thinkin of gettin a 2.25 or 2.5 catback. and a CAI.

5. any other recommondations....


would doing all of these be decent or would i be wasting my time and i should save my money and effort for bigger things?????

all comments welcome, flame on, i deserve it for tryin to make a economy motor quick.

The DX Rex

92b16vx

If you're going to take the time to swap the cam, header, and tranny, do yourself a favor and just swap in a D16Z6. The Z1 is hopeless.

The DX Rex

yea i kno i shud, but i think its easier to do all that than a full swap.

92b16vx

Not really. Only issue is the o2, and that is easy too. You don't need new shiftlinkage, axles, or mounts, one of the most straight forward swaps there is.

neutron91

swapping the intake manifold and cam isnt gonna do much at all... the ports on the z1 head are the size of a quarter so its not gonna flow all the air the manifold brings in... i learned this when i changed my manifold over to a z6... might as well change the head... i have also put a y8 tranny and am using a p28 with an ex/si wiring harness so i can use the 4 wire o2... i know it would have been easier to do a whole swap but i had all these parts lying around so i didnt have to spend any more cash to do this... i must say it feels like a totally different car though

specv5150

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Bense

1. the z1 cam lobes are the same size if not bigger than the z6.

RUN A DIFFERENT ECU PROGRAM! That ecu leans the **** out of that motor

specv5150

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Gordon Liddy &raquo;</TD></TR><TR><TD CLASS="quote">1. the z1 cam lobes are the same size if not bigger than the z6.

RUN A DIFFERENT ECU PROGRAM! That ecu leans the **** out of that motor</TD></TR></TABLE>



Keeping the same format (I/H/E) and comparing the two ECU (stock and P28), the difference is like night and day

lazie

D15Z1 is useless! its not a performance motor and should not be made in to one!

specv5150

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lazie &raquo;</TD></TR><TR><TD CLASS="quote">D15Z1 is useless! its not a performance motor and should not be made in to one!</TD></TR></TABLE>

spreng87

I have a VX also. When I had my Stock Z1 motor it was pretty much the slowest **** I ever had... Slower than my auto 1992 integra stock.... as for the ECU... I swapped in a p28 computer just for the hell of it... and you can hear the difference but it has a slight difference in accelerating power... the sound... well you can actually hear the VTEC engage for once... if you have like open headers at the DP or a cat back you'll hear it a lot clearer... whereas the VX you can't tell if Vtec is engage or not... lol it sounds like a Bseries accelerating slowly till vtec hits... hilarious... but yea i swapped mine out and put an LS in there.... LS because I want the boost ... and lots of it. If you wanna stay single I suggest swapping a z6 or a y8... Most straight forward easiest swap for an EG.... And i don't recomend using your VX tranny either... Longest ****... go get yourself and ex/si tranny for the new single swap...

91civicDXdude

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by specv5150 &raquo;</TD></TR><TR><TD CLASS="quote">

Keeping the same format (I/H/E) and comparing the two ECU (stock and P28), the difference is like night and day</TD></TR></TABLE>

i bet your butt-dyno tells you so, but sadly, it is not real. it seems so much faster because of the more noticeable VTEC, but what is happening is that you're choking the engine out by not activating the 4th valve until such a high rpm. and then, you're running the fuel and timing maps from an engine with not only larger displacement, but a higher flowing head, intake manifold, and exhaust manifold. you go from crazy lean to crazy rich.

bottom line? the d15z1 simply is not a performance engine. sure, you can argue that hondas themselves arent performance cars, but modding a d15z1 is like modding a 3 cylinder geo metro: pointless.

specv5150

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91civicDXdude &raquo;</TD></TR><TR><TD CLASS="quote">i bet your butt-dyno tells you so, but sadly, it is not real. it seems so much faster because of the more noticeable VTEC, but what is happening is that you're choking the engine out by not activating the 4th valve until such a high rpm. and then, you're running the fuel and timing maps from an engine with not only larger displacement, but a higher flowing head, intake manifold, and exhaust manifold. you go from crazy lean to crazy rich.

bottom line? the d15z1 simply is not a performance engine. sure, you can argue that hondas themselves arent performance cars, but modding a d15z1 is like modding a 3 cylinder geo metro: pointless.</TD></TR></TABLE>

I should have mentioned that I am not running a Z1 but a Y5 which is the same in principal....as far as the VTEC-E.